"adobe media core cs6 has stopped working" Alerts when I close out of Prem Pro CS6

and "adobe media core cs5.5 has stopped working" Alerts When I close Prem Pro CS5.5

It Started when I was trying to fix another issue, the only thing I can think of that was done, out of the ordinary, was to manually delete the media cash in AppData/Roaming/Adobe/Common folder. This may of course be irrelevant.